|  
                Year  
            |  
         
             Beginning Price  
            |  
         
             Ending Price  
            |  
         
             Gain or Loss 
            |  
         
             Percent Gain or Loss  
            |  
      
|  
           2005 
            |  
         
           27.00 
            |  
         
           37.88 
            |  
         
           10.88 
            |  
         
           40.30% 
            |  
      
|  
           2006 
            |  
         
           37.88 
                
           |  
         
           59.47 
            |  
         
           21.59 
            |  
         
           57.00% 
            |  
      
|  
           2007 
            |  
         
           59.47 
            |  
         
           46.64 
            |  
         
           -12.83 
            |  
         
           -21.57% 
            |  
      
|  
           2008 
            |  
         
           46.64 
            |  
         
           26.89 
            |  
         
           -19.75 
            |  
         
           -42.35% 
            |  
      
|  
           2009 
            |  
         
           26.89 
            |  
         
           17.55 
            |  
         
           -9.34 
            |  
         
           -34.73% 
            |  
      
|  
           2010 
            |  
         
           17.55 
            |  
         
           12.26 
            |  
         
           -5.29 
            |  
         
           -30.14% 
            |  
      
|  
           2011 
            |  
         
           12.26 
            |  
         
           9.29 
            |  
         
           -2.97 
            |  
         
           -24.23% 
            |  
      
|  
           2012 
            |  
         
           9.29 
            |  
         
           6.65 
            |  
         
           -2.64 
            |  
         
           -28.42% 
            |  
      
|  
           2013 
            |  
         
           6.65 
            |  
         
           17.40 
            |  
         
           10.75 
            |  
         
           161.65% 
            |  
      
|  
           2014 
            |  
         
           17.40 
            |  
         
           15.00 
            |  
         
           -2.40 
            |  
         
           -13.79% 
            |